The largest black hole in the universe, its mass is about 180 times that of the sun. This mass is roughly equivalent to a small galaxy.
Galaxy is what we often call the solar system, which is probably such a concept. There have been some introductions about black holes in the book Three-body. It is said in the book that a black hole will absorb the surrounding matter indefinitely, and then expand itself into a cycle.
If such a huge black hole really comes to us, the first thing we have to face is the disappearance of our body. If the black hole really sucked the earth in, we should have no time to react and disappear into this vast universe. First of all, because black holes are huge, we cannot enter them as individuals, and the whole earth will be swallowed up by them. And because black holes absorb light, if we are sucked in by black holes, we will only see darkness. After entering a black hole, due to the strong gravity in the black hole, we may be decomposed by it as soon as we enter the black hole. In the end, we will no longer be us.
Another possibility is that because we live in a three-dimensional world, if we are sucked in by a black hole, we may enter a two-dimensional world, and the two-dimensional world is a flat world. We will no longer have sound or emotion, and we will become another substance.
However, black holes have their advantages. For example, black holes may help us solve the energy problem that has been bothering us for a long time. In black holes, because black holes are formed by the collapse of stars, the energy content in them is also very huge. If we can make good use of it, we can also benefit ourselves. On the other hand, our research on the topic of interstellar has also encountered many obstacles. It would be great if we could use the power of black holes to help us achieve technological breakthroughs in a short time, which is why we have been studying black holes and improving our scientific and technological level.